mirror of
https://github.com/UtilitechAS/amsreader-firmware.git
synced 2026-01-17 09:02:11 +00:00
61 lines
2.0 KiB
Markdown
61 lines
2.0 KiB
Markdown
|
|
# Overview
|
|
|
|
Here are links to the different board designs together with a short summary.
|
|
|
|
## HAN_ESP_TSS721 (The current design)
|
|
|
|
This is the current and most robust design for the [main board](HAN_ESP_TSS721). There's been great help in creating this, both here on GitHub, but also at the Norwegian home automation forum, [www.hjemmeautomasjon.no](https://www.hjemmeautomasjon.no/forums/topic/1982-lesing-av-ams-data-amshan-iot/)
|
|
|
|
The board
|
|
|
|
* uses TSS721 for MBus to TTL conversion
|
|
* holds ESP8266 for processing and transmit HAN data to WiFi / MQTT
|
|
* full schematics and PCB in editable [KiCad](http://www.kicad-pcb.org/) source files
|
|
* features a temperature sensor (DS18B20)
|
|
* uses a modular design, leaving these features optional
|
|
* temperature sensor
|
|
* M-bus TX
|
|
* WiFi (Leave ESP, power supply and use for only M-bus to TTL)
|
|
|
|
### Status
|
|
|
|
At the time of this writing, this has never been tried as a whole, but all parts has been prototyped individually. First PCB prototypes are very soon in the order.
|
|
|
|
## HAN_ESP_Simple (Was: Board 1)
|
|
|
|
The project's original [board design](HAN_ESP_Simple). It
|
|
|
|
* is based on the ESP8266 chip
|
|
* is powered by USB
|
|
* uses a very simple voltage divider to demodulate the M-bus signal
|
|
* has shematic and pcb design only available as finished pdf/png files
|
|
|
|
### Status
|
|
|
|
Prototypes have been made and some people have started using them(?).
|
|
|
|
## HAN_TTL_TSS721 (Was: Board 2)
|
|
|
|
This [board design](HAN_TTL_TSS721) is a newer alternative to the original. It
|
|
|
|
* is an Arduino shield.
|
|
* uses the industry standard TSS721 chip to interface the M-bus.
|
|
* is optically isolate
|
|
* has shematic and pcb design available in editable [KiCad](http://www.kicad-pcb.org/) source files
|
|
|
|
### Status
|
|
|
|
Unfinished, just started.
|
|
|
|
## MBUS_Simulator (Was: Board 3)
|
|
|
|
This [board](MBUS_Simulator) is a M-bus master simulator to be able to develop and
|
|
test the other boards without being dependent on having and using a real AMS unit.
|
|
|
|
### Status
|
|
|
|
Implementation done.
|
|
|
|
Please also see [Getting started building or modifying](GETTING_STARTED.md)
|